How to fix warped orthographic views in 2.8
Do you mean this? Ortho in each editor?


press Num 5 (switch persp/ortho) in each view
for Camera view you have to select Camera and go into Properties editor &gt; Camera Data &gt; Lens and switch to Orthographic type


Alternatively you can disable Auto switch (persp/ortho) under User Preferences &gt; Navigation that keeps set view type.


Edit
To make Perspective view less deformed change Focal lenght in *3D view editor Properties (N)&gt; View to something like 200.